In recent days, greenhouse growers have reported that last year, the growth of bean pods in the sheds was poor, and serious diseases occurred on the leaves, vines and horns. Many drugs were used and the results were not good. After detailed analysis and comparison, it was found that the disease was caused by the combined infection of the bean rust and bean spot blight.
The bean rust disease uses winter spores to overwinter on the diseased body. When it germinates, it produces single spores. It spreads through the air flow, produces pathogens in the diseased part to re-infect, and then spreads and spreads. On the other hand, spot blight is caused by mycelia and conidia growing in the soil with the remains of the sick. Rainwater splash spreads and spreads, and initial infection and reinfection with conidia. Both warm and high humidity conditions are conducive to the occurrence of two diseases.
Combining the mechanism and causes of these two diseases, in the prevention and control process, 80% fully-complexed mancozeb WP can be used 800 times or 25% difenoconazole 3,000 times, 80% Ethane. 3000 times of prime emulsifiable concentrate and multifunctional high-potassium water-soluble fertilizer 800 times mixed spray control. After spraying for the second time every 5 days, the illness can be completely disappeared and the growth recovery is good. This not only ensures quality, but also achieves the effect of increasing seedling growth.
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